The dock raid: disable the freighters, then go after the civ defenders ,then scoop up the freighters cargo, THEN go after the docked heavies. Be quick tho.

The freighter raid is the same: I cloak and run fast as possible to the head of the convoy, disable the lead freighters, kill the defender (the lag defender usually stays with the rear group) and raid the lead freighters THEN turn on the followers- same as above: disable freighters, kill defender, loot freighters. be FAST !!! If the following defender joins the lead in attacking you just watch the freighters- keep them DISABLED until you can kill the defenders and have time to loot them.

The Array: Disable freighters (both if possible but I can quite catch the second one), kill defenders, loot freighter THEN kill nodes on array BUT be ready to disable the two freighters when the shield drops as a defender WILL warp in as the shield drops. It's important to heal yourself as the defender will pound you as the freighters are being disabled but you MUST get them before they bug out. WATCH them as you kill the defender and loot the closest one after the defender is dead then RUN FAST for the other freighter and disable/loot him.

It's rough doing it alone, but it becomes easy the more you run the missions.

-Transports: CLOAK! Then Full Impulse to the middle satelite ignoring the first fed ship for now. Go Full Stop, and shoot the first freighter that comes into range. Loot it. Don't use AoE here, that might screw you.
A few seconds later, a ship will jump in. Kill it, as quick as you can.
Now you can Full Impulse to the head of the column again, and disable and loot freighters as they come.

-Drydock: Approach to 9.x klicks of the first docked vessel, full stop, and kill it. Circle around the station, keeping more than 10km distance to the ships in the middle, and get into a position 9.x klicks away from the second docked ship. Rinse, repeat. Just kill docked ships from safe positions, don't engage anything else.
After you killed all the docked ships, clean up the ships in the middle and the reinforcements and you're done.

-Outpost: Immedieatly engage the ship escorting the freighters leaving towards the left, kill it, then go for the civilian ships from the center who probably joined in anyway.
Now you should have enough time to disable and loot both of the left freighters.
If you were really good, you can rush to the right satelite and get the two freighters and the escort there and complete the obtional early, but that's quite hard ... and not necessary.
Destroy the shield generators and head to mid, kill the ship jumping in and hunt down the two freighters that were in the shield for completion.

With all of them, make sure that nothing can interrupt you while looting, and that you will have a safe moment to loot any disabled ship - or they're like to not count.

They're certainly possible.
'Took me a couple of tries to get the freighter raid optional on my first character, but that was because i tried to fight through - once i remembered that Klingon ships have a cloak, it turned out to be quite easy.

Of course, as the mission for it already states: Not every captain might able to complete them. They're MEANT to be challenging. But far from hard, or even impossible.

Of course you can try to blame the mission, but the truth is: you're doing it wrong. You got advice how to change that.
Your attitude though really needs improving, or you won't make it very far in any game except Hello Kitty Online.

Malak's tactics for the Transport raid are pretty much spot on.
It's difficult, no doubt, but we are Klingons!
Do you have no friends to run with?
Doing the Pi Canis sorties with a wing or 2 makes all the difference.
Maybe even if you just asked in zone chat, like on Qonos, in advance you could find some interested in doing the Pi Cani sorties with you.

All the rest of it is fun. But I'm never bothering with the optional objectives again. I can't get them no matter how fast I am.

...And 1 more thing: Make sure you're cargo hold has empty slots, I've blown the optional quite a few times by not having space in the hold for cargo, and by the time I dump items the freighter escapes.